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Source code for galaxy.tools.deps.conda_util

import functools
import hashlib
import json
import logging
import os
import re
import shutil
import tempfile

from distutils.version import LooseVersion
from sys import platform as _platform

import six

from ..deps import commands
from ..deps import installable

log = logging.getLogger(__name__)

# Not sure there are security concerns, lets just fail fast if we are going
# break shell commands we are building.
SHELL_UNSAFE_PATTERN = re.compile(r"[\s\"']")

IS_OS_X = _platform == "darwin"

# BSD 3-clause
CONDA_LICENSE = "http://docs.continuum.io/anaconda/eula"
VERSIONED_ENV_DIR_NAME = re.compile(r"__(.*)@(.*)")
UNVERSIONED_ENV_DIR_NAME = re.compile(r"__(.*)@_uv_")
USE_PATH_EXEC_DEFAULT = False
CONDA_VERSION = "4.3.24"
CONDA_BUILD_VERSION = "2.1.17"
USE_LOCAL_DEFAULT = False


def conda_link():
    if IS_OS_X:
        url = "https://repo.continuum.io/miniconda/Miniconda3-4.2.12-MacOSX-x86_64.sh"
    else:
        url = "https://repo.continuum.io/miniconda/Miniconda3-4.2.12-Linux-x86_64.sh"
    return url


def find_conda_prefix(conda_prefix=None):
    """ If supplied conda_prefix is not set, default to the default location
    for Miniconda installs.
    """
    if conda_prefix is None:
        home = os.path.expanduser("~")
        miniconda_2_dest = os.path.join(home, "miniconda2")
        miniconda_3_dest = os.path.join(home, "miniconda3")
        # Prefer miniconda3 install if both available
        if os.path.exists(miniconda_3_dest):
            return miniconda_3_dest
        elif os.path.exists(miniconda_2_dest):
            return miniconda_2_dest
        else:
            return miniconda_3_dest
    return conda_prefix


[docs]class CondaContext(installable.InstallableContext): installable_description = "Conda"
[docs] def __init__(self, conda_prefix=None, conda_exec=None, shell_exec=None, debug=False, ensure_channels='', condarc_override=None, use_path_exec=USE_PATH_EXEC_DEFAULT, copy_dependencies=False, use_local=USE_LOCAL_DEFAULT): self.condarc_override = condarc_override if not conda_exec and use_path_exec: conda_exec = commands.which("conda") if conda_exec: conda_exec = os.path.normpath(conda_exec) self.conda_exec = conda_exec self.debug = debug self.shell_exec = shell_exec or commands.shell self.copy_dependencies = copy_dependencies if conda_prefix is None: info = self.conda_info() if info and "default_prefix" in info: conda_prefix = info["default_prefix"] if conda_prefix is None: conda_prefix = find_conda_prefix(conda_prefix) self.conda_prefix = conda_prefix if conda_exec is None: self.conda_exec = self._bin("conda") if ensure_channels: if not isinstance(ensure_channels, list): ensure_channels = [c for c in ensure_channels.split(",") if c] else: ensure_channels = None self.ensure_channels = ensure_channels self._conda_version = None self._miniconda_version = None self._conda_build_available = None self.use_local = use_local
@property def conda_version(self): if self._conda_version is None: self._guess_conda_properties() return self._conda_version @property def conda_build_available(self): if self._conda_build_available is None: self._guess_conda_properties() return self._conda_build_available def _guess_conda_properties(self): conda_meta_path = self._conda_meta_path # Perhaps we should call "conda info --json" and parse it but for now we are going # to assume the default. conda_version = LooseVersion(CONDA_VERSION) conda_build_available = False miniconda_version = "3" if os.path.exists(conda_meta_path): for package in os.listdir(conda_meta_path): package_parts = package.split("-") if len(package_parts) < 3: continue package = '-'.join(package_parts[:-2]) version = package_parts[-2] # build = package_parts[-1] if package == "conda": conda_version = LooseVersion(version) if package == "python" and version.startswith("2"): miniconda_version = "2" if package == "conda-build": conda_build_available = True self._conda_version = conda_version self._miniconda_version = miniconda_version self._conda_build_available = conda_build_available @property def _conda_meta_path(self): return os.path.join(self.conda_prefix, "conda-meta") @property def _override_channels_args(self): override_channels_args = [] if self.ensure_channels: override_channels_args.append("--override-channels") for channel in self.ensure_channels: override_channels_args.extend(["--channel", channel]) return override_channels_args
[docs] def ensure_conda_build_installed_if_needed(self): if self.use_local and not self.conda_build_available: conda_targets = [CondaTarget("conda-build", version=CONDA_BUILD_VERSION)] # Cannot use --use-local during installation of conda-build. return install_conda_targets(conda_targets, conda_context=self, env_name=None, allow_local=False) else: return 0
[docs] def conda_info(self): if self.conda_exec is not None: info_out = commands.execute([self.conda_exec, "info", "--json"]) info = json.loads(info_out) return info else: return None
[docs] def is_conda_installed(self): """ Check if conda_exec exists """ if os.path.exists(self.conda_exec): return True else: return False
[docs] def can_install_conda(self): """ If conda_exec is set to a path outside of conda_prefix, there is no use installing conda into conda_prefix, since it can't be used by galaxy. If conda_exec equals conda_prefix/bin/conda, we can install conda if either conda_prefix does not exist or is empty. """ conda_exec = os.path.abspath(self.conda_exec) conda_prefix_plus_exec = os.path.abspath(os.path.join(self.conda_prefix, 'bin/conda')) if conda_exec == conda_prefix_plus_exec: if not os.path.exists(self.conda_prefix): return True elif os.listdir(self.conda_prefix) == []: os.rmdir(self.conda_prefix) # Conda's install script fails if path exists (even if empty). return True else: log.warning("Cannot install Conda because conda_prefix '%s' exists and is not empty.", self.conda_prefix) return False else: log.warning("Skipping installation of Conda into conda_prefix '%s', " "since conda_exec '%s' is set to a path outside of conda_prefix.", self.conda_prefix, self.conda_exec) return False
[docs] def command(self, operation, args): if isinstance(args, list): args = " ".join(args) conda_prefix = self.conda_exec if self.debug: conda_prefix += " --debug" return "%s %s %s" % (conda_prefix, operation, args)
[docs] def exec_command(self, operation, args): command = self.command(operation, args) env = {} condarc_override = self.condarc_override if condarc_override: env["CONDARC"] = condarc_override log.debug("Executing command: %s", command) conda_exec_home = env['HOME'] = tempfile.mkdtemp(prefix='conda_exec_home_') # We don't want to pollute ~/.conda, which may not even be writable try: return self.shell_exec(command, env=env) except commands.CommandLineException as e: log.warning(e) return e.returncode finally: shutil.rmtree(conda_exec_home, ignore_errors=True)
[docs] def exec_create(self, args, allow_local=True): create_base_args = [ "-y" ] if allow_local and self.use_local: create_base_args.extend(["--use-local"]) create_base_args.extend(self._override_channels_args) create_base_args.extend(args) return self.exec_command("create", create_base_args)
[docs] def exec_remove(self, args): """Remove a conda environment using conda env remove -y --name `args`.""" remove_base_args = [ "remove", "-y", "--name" ] remove_base_args.extend(args) return self.exec_command("env", remove_base_args)
[docs] def exec_install(self, args, allow_local=True): install_base_args = [ "-y" ] if allow_local and self.use_local: install_base_args.extend(["--use-local"]) install_base_args.extend(self._override_channels_args) install_base_args.extend(args) return self.exec_command("install", install_base_args)
[docs] def exec_clean(self, args=[], quiet=False): """ Clean up after conda installation. """ clean_base_args = [ "--tarballs", "-y" ] clean_args = clean_base_args + args if quiet: clean_args.extend([">", "/dev/null"]) return self.exec_command("clean", clean_args)
[docs] def export_list(self, name, path): return self.exec_command("list", [ "--name", name, "--export", ">", path ])
[docs] def env_path(self, env_name): return os.path.join(self.envs_path, env_name)
@property def envs_path(self): return os.path.join(self.conda_prefix, "envs")
[docs] def has_env(self, env_name): env_path = self.env_path(env_name) return os.path.isdir(env_path)
@property def deactivate(self): return self._bin("deactivate") @property def activate(self): return self._bin("activate")
[docs] def is_installed(self): return self.is_conda_installed()
[docs] def can_install(self): return self.can_install_conda()
@property def parent_path(self): return os.path.dirname(os.path.abspath(self.conda_prefix)) def _bin(self, name): return os.path.join(self.conda_prefix, "bin", name)
def installed_conda_targets(conda_context): envs_path = conda_context.envs_path dir_contents = os.listdir(envs_path) if os.path.exists(envs_path) else [] for name in dir_contents: versioned_match = VERSIONED_ENV_DIR_NAME.match(name) if versioned_match: yield CondaTarget(versioned_match.group(1), versioned_match.group(2)) unversioned_match = UNVERSIONED_ENV_DIR_NAME.match(name) if unversioned_match: yield CondaTarget(unversioned_match.group(1))
[docs]@six.python_2_unicode_compatible class CondaTarget(object):
[docs] def __init__(self, package, version=None, channel=None): if SHELL_UNSAFE_PATTERN.search(package) is not None: raise ValueError("Invalid package [%s] encountered." % package) self.package = package if version and SHELL_UNSAFE_PATTERN.search(version) is not None: raise ValueError("Invalid version [%s] encountered." % version) self.version = version if channel and SHELL_UNSAFE_PATTERN.search(channel) is not None: raise ValueError("Invalid version [%s] encountered." % channel) self.channel = channel
def __str__(self): attributes = "package=%s" % self.package if self.version is not None: attributes = "%s,version=%s" % (self.package, self.version) else: attributes = "%s,unversioned" % self.package if self.channel: attributes = "%s,channel=%s" % self.channel return "CondaTarget[%s]" % attributes __repr__ = __str__ @property def package_specifier(self): """ Return a package specifier as consumed by conda install/create. """ if self.version: return "%s=%s" % (self.package, self.version) else: return self.package @property def install_environment(self): """ The dependency resolution and installation frameworks will expect each target to be installed it its own environment with a fixed and predictable name given package and version. """ if self.version: return "__%s@%s" % (self.package, self.version) else: return "__%s@_uv_" % (self.package) def __hash__(self): return hash((self.package, self.version, self.channel)) def __eq__(self, other): if isinstance(other, self.__class__): return (self.package, self.version, self.channel) == (other.package, other.version, other.channel) return False def __ne__(self, other): return not(self == other)
def hash_conda_packages(conda_packages, conda_target=None): """ Produce a unique hash on supplied packages. TODO: Ideally we would do this in such a way that preserved environments. """ h = hashlib.new('sha256') for conda_package in conda_packages: h.update(conda_package.install_environment) return h.hexdigest() # shell makes sense for planemo, in Galaxy this should just execute # these commands as Python
[docs]def install_conda(conda_context, force_conda_build=False): f, script_path = tempfile.mkstemp(suffix=".sh", prefix="conda_install") os.close(f) download_cmd = " ".join(commands.download_command(conda_link(), to=script_path, quote_url=True)) install_cmd = "bash '%s' -b -p '%s'" % (script_path, conda_context.conda_prefix) package_targets = [ "conda=%s" % CONDA_VERSION, ] if force_conda_build or conda_context.use_local: package_targets.append("conda-build=%s" % CONDA_BUILD_VERSION) fix_version_cmd = "%s install -y -q %s " % (os.path.join(conda_context.conda_prefix, 'bin/conda'), " ".join(package_targets)) full_command = "%s && %s && %s" % (download_cmd, install_cmd, fix_version_cmd) try: log.info("Installing Conda, this may take several minutes.") return conda_context.shell_exec(full_command) finally: if os.path.exists(script_path): os.remove(script_path)
def install_conda_targets(conda_targets, conda_context, env_name=None, allow_local=True): if env_name is not None: create_args = [ "--name", env_name, # environment for package ] for conda_target in conda_targets: create_args.append(conda_target.package_specifier) return conda_context.exec_create(create_args, allow_local=allow_local) else: return conda_context.exec_install([t.package_specifier for t in conda_targets], allow_local=allow_local)
[docs]def install_conda_target(conda_target, conda_context, skip_environment=False): """ Install specified target into a its own environment. """ if not skip_environment: create_args = [ "--name", conda_target.install_environment, # environment for package conda_target.package_specifier, ] return conda_context.exec_create(create_args) else: return conda_context.exec_install([conda_target.package_specifier])
def cleanup_failed_install_of_environment(env, conda_context): if conda_context.has_env(env): conda_context.exec_remove([env]) def cleanup_failed_install(conda_target, conda_context=None): cleanup_failed_install_of_environment(conda_target.install_environment, conda_context=conda_context) def best_search_result(conda_target, conda_context, channels_override=None, offline=False): """Find best "conda search" result for specified target. Return ``None`` if no results match. """ search_cmd = [conda_context.conda_exec, "search", "--full-name", "--json"] if offline: search_cmd.append("--offline") if channels_override: search_cmd.append("--override-channels") for channel in channels_override: search_cmd.extend(["--channel", channel]) else: search_cmd.extend(conda_context._override_channels_args) search_cmd.append(conda_target.package) res = commands.execute(search_cmd) hits = json.loads(res).get(conda_target.package, []) hits = sorted(hits, key=lambda hit: LooseVersion(hit['version']), reverse=True) if len(hits) == 0: return (None, None) best_result = (hits[0], False) for hit in hits: if is_search_hit_exact(conda_target, hit): best_result = (hit, True) break return best_result def is_search_hit_exact(conda_target, search_hit): target_version = conda_target.version # It'd be nice to make request verson of 1.0 match available # version of 1.0.3 or something like that. return not target_version or search_hit['version'] == target_version def is_conda_target_installed(conda_target, conda_context): # fail by default if conda_context.has_env(conda_target.install_environment): return True else: return False def filter_installed_targets(conda_targets, conda_context): installed = functools.partial(is_conda_target_installed, conda_context=conda_context) return list(filter(installed, conda_targets)) def build_isolated_environment( conda_packages, conda_context, path=None, copy=False, quiet=False, ): """ Build a new environment (or reuse an existing one from hashes) for specified conda packages. """ if not isinstance(conda_packages, list): conda_packages = [conda_packages] # Lots we could do in here, hashing, checking revisions, etc... try: hash = hash_conda_packages(conda_packages) tempdir = tempfile.mkdtemp(prefix="jobdeps", suffix=hash) tempdir_name = os.path.basename(tempdir) export_paths = [] for conda_package in conda_packages: name = conda_package.install_environment export_path = os.path.join(tempdir, name) conda_context.export_list( name, export_path ) export_paths.append(export_path) create_args = ["--unknown"] # Works in 3.19, 4.0 - 4.2 - not in 4.3. # Adjust fix if they fix Conda - xref # - https://github.com/galaxyproject/galaxy/issues/3635 # - https://github.com/conda/conda/issues/2035 offline_works = (conda_context.conda_version < LooseVersion("4.3")) or \ (conda_context.conda_version >= LooseVersion("4.4")) if offline_works: create_args.extend(["--offline"]) else: create_args.extend(["--use-index-cache"]) if path is None: create_args.extend(["--name", tempdir_name]) else: create_args.extend(["--prefix", path]) if copy: create_args.append("--copy") for export_path in export_paths: create_args.extend([ "--file", export_path, ">", "/dev/null" ]) if quiet: create_args.extend([">", "/dev/null"]) if path is not None and os.path.exists(path): exit_code = conda_context.exec_install(create_args) else: exit_code = conda_context.exec_create(create_args) return (path or tempdir_name, exit_code) finally: conda_context.exec_clean(quiet=quiet) shutil.rmtree(tempdir) def requirement_to_conda_targets(requirement): conda_target = None if requirement.type == "package": conda_target = CondaTarget(requirement.name, version=requirement.version) return conda_target
[docs]def requirements_to_conda_targets(requirements): conda_targets = (requirement_to_conda_targets(_) for _ in requirements) return [c for c in conda_targets if c is not None]
__all__ = ( 'CondaContext', 'CondaTarget', 'install_conda', 'install_conda_target', 'requirements_to_conda_targets', )